| 摘要 |
PROBLEM TO BE SOLVED: To provide a client with contents with high request frequency from the client at high speed as reducing increase of network traffic. SOLUTION: A control part 15 obtains an HTML document by accessing a URL specified by a contents request received from a WWW browser 3 and confirms data included in the contents by checking a stored place the link of which is set in the document. Then, when the confirmed data is stored in a data cache part 14, it is obtained from the data cache part 14 and when the data is not stored, it is obtained by accessing the stored place and when the obtained data satisfies prescribed conditions, it is cached to the data cache part 14. Then, the document and the data obtained in the above way are transmitted to a WWW browser 2.
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